<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            font-size: 20px;
            color:red;
        }
    </style>
</head>
<body>
    <div>
        <p>hello world</p>
    </div>
</body>
</html>